AC balanced power schematic

[taloyd]

hello,

I'm planning on building a balanced AC power source. This will be a very simple one-in one-out affair, as I have a series-mode surge protector with all my equipment plugged into that, so I only need to plug the surge protector into the balanced power, and so, only one outlet.

My question: what sort of parts do I need for the unit, besides the center-tap transformer? I don't believe I need any sort of surge-protection, as the load won't permit any excessive current-draw. I'm assuming a filter would be necessary (EMI, RFI???)...

Any schematics or ideas greatly appreciated...

thanks,

-tal

[TwoSpoons]

So what exactly are you trying to achieve?

[taloyd]

hello,

I'm trying to achieve balanced AC power - 60 volts to each direction from ground, a clean 120 between them. That's all. the only difference, is that I'll be using a surge protector downstream, with all my equipment plugged into it, so I only need one outlet. I'm just wondering what to have in the box besides the actual center-tap transformer. If it's as simple as an Auricap across the input of the transformer, then that's dandy. I just want confirmation of that.

thanks,

-tal

[pooge]

The one plug should be a GFCI outlet.

[Coulomb]

You will want to ensure the the transformer you use is Bifilar wound to ensure the two secondaries are 180 out of phase. A centre tap is not what you are looking for. You will need Dual secondaries, centre tap transformers are often just one coil, wound in one direction with a voltage tap in the centre.

One connecting the two secondaries there are several connection themes. The most dangerous uses the ground as a common return for the two balanced 60VAC feeds, this also happens to be the best for eliminating noise, in theory as the two AC lines are truly balanced. The accepted mode under electrical code is two use one side of the output as Hot and the other side as neutral. This causes no current to flow to the ground throw the centre connected coils. The difference is in which side of the secondaries you connect together, as they can be connected in and out of phase. Both connections provide a balanced output, though one can be deadly and the other quite safe. There are some white papers and a special deal on the correct transformer to use at www.plitron.com


Regards

Anthony

[taloyd]

Coulomb,

Do you have a schematic for what you're describing? I can somewhat figure out what you're saying, but a schematic would eliminate all doubt...

I'm actually not sure what the transformer is... I haven't seen it yet. It's a 40 amp continuous unit from the 70's from my father... if it isn't suitable, I'll just get one of the Equi-Tech units from the following site:

http://www.equitech.com/products/seconds/seconds.html

It's $400 but it's a really nice piece, literally ideal for what's needed...

thanks again,

-tal

[Coulomb]

Have you checked Equitech's White Paper section on thier site, they pretty much laqy everything out for you.

Regards

Anthony

[bsyyu]

Hi

Checked this link for the details ( including schematic ) for assembling transcendent balance power supply kit.


bsyyu

[bsyyu]

The link is

http://home.comcast.net/~thomasw_2/T...tSoundKit.html


bsyyu

[Prune]

taloyd (ref: post 3), why would you use an Auricap in this way? Why not just use a regular capacitor with sufficient ratings? What's next, platinum wire with aerogel insulation for the mains cable?